How severe is CVE-2026-54833?

CVE-2026-54833 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-54833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-54833?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-54833 published?

CVE-2026-54833 was published on 2026-06-26.

CVE-2026-54833

CVE-2026-54833 is a high-severity vulnerability with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-321.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-321
Published: 2026-06-26
Last modified: 2026-06-26

Description

Unauthenticated Backdoor in Enable CORS <= 2.0.3 versions.

Frequently asked questions

What is CVE-2026-54833?: Unauthenticated Backdoor in Enable CORS <= 2.0.3 versions.
How severe is CVE-2026-54833?: CVE-2026-54833 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-54833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-54833?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-54833 published?: CVE-2026-54833 was published on 2026-06-26.

References

https://patchstack.com/database/wordpress/plugin/enable-cors/vulnerability/wordpress-enable-cors-plugin-2-0-3-backdoor-vulnerability?_s_id=cve

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